<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
    <style>
        li {
            list-style: none;
        }
    </style>
</head>

<body>
    <div id="root">
        <ul>
            <h2>上单三姐妹</h2>
            <input type="text" placeholder="请输入名字" v-model="keyWord">
            <li v-for="(p,index) in filpersons" :key="p.id">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>

    </div>

    <script>
        // 用watch实现
        /*         new Vue({
                    el: '#root',
                    data: {
                        keyWord: '',
                        persons: [
                            { id: '001', name: '马冬梅', age: 18, sex: '女' },
                            { id: '002', name: '周冬雨', age: 19, sex: '女' },
                            { id: '003', name: '周杰伦', age: 20, sex: '男' },
                            { id: '004', name: '温兆伦', age: 20, sex: '男' },
                        ],
                        filpersons: []
                    },
                    watch: {
                        keyWord: {
                            immediate: true,
                            handler(val) {
                                this.filpersons = this.persons.filter((p) => {
                                    return p.name.indexOf(val) !== -1
                                })
                            }
                        }
                    }
        
        
                }) */
        // 用computed实现
        new Vue({
            el: '#root',
            data: {
                keyWord: '',
                persons: [
                    { id: '001', name: '马冬梅', age: 18, sex: '女' },
                    { id: '002', name: '周冬雨', age: 19, sex: '女' },
                    { id: '003', name: '周杰伦', age: 20, sex: '男' },
                    { id: '004', name: '温兆伦', age: 20, sex: '男' },
                ]
            },
            computed: {
                filpersons() {
                    return this.persons.filter((p) => {
                        return p.name.indexOf(this.keyWord) !== -1
                    })
                }
            }

        })
    </script>
</body>

</html>